【摘要】 以14个加拿大早熟玉米群体获得的45个改良系为材料,与黑龙江省部分早熟玉米种质的5个自交系按照NCⅡ设计组配测交组合,经多点鉴定研究加拿大早熟群体改良系的配合力及杂种优势关系。结果表明,群体EP6、EP7、EP8、EP14和EP15的改良系SW1030、SW1052、SW1271、SW1274、SW1183、SW1072、SW1054、SW1069单株产量等综合性状一般配合力(GCA)效应表现较好;45个改良系分属于兰卡斯特、瑞德、塘四平头、PA和大黄种质群;群体改良系多与Lancaster类群、Reid类群具有较好的杂种优势。更多还原

【Abstract】 A NCⅡ test design was adopted to cross 5 common early maturity testers in Heilongjiang with 45 im-proved lines from 14 Canadian populations to analyze combining ability and heterosis. The result showed GCA ef-fect value of individual plant yield of improved lines of SW1030, SW1052, SW1271, SW1274, SW1183, SW1072,SW1054 and SW1069 which come from EP6, EP7, EP8, EP14 and EP15 respectively were well. Forty-five im-proved lines belong to Lancaster group, Reid group, Sipingtou group, PA and Dahuang group, the heterosis was highbetween improved lines and Lancaster group, Reid group.更多还原